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oxygen therapy
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oxygen therapy

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Written by
Kara Rogers
Kara Rogers is the senior editor of biomedical sciences at Encyclopædia Britannica, where she oversees a range of content from medicine and genetics to microorganisms. She joined Britannica in 2006 and...
Kara Rogers
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Article History

oxygen therapy, in medicine, the administration of oxygen. Oxygen therapy is used for acute conditions, in which tissues such as the brain and heart are at risk of oxygen deprivation, as well as for chronic diseases that are characterized by sustained low blood-oxygen levels (hypoxemia). In emergency situations, oxygen may be administered by citizen responders via mouth-to-mouth breaths in cardiopulmonary resuscitation (CPR) or by emergency medical personnel via a face mask placed over the victim’s mouth and nose that is attached to a small, portable compressed-gas oxygen cylinder. For patients affected by chronic lung diseases, such as chronic obstructive pulmonary ...(100 of 981 words)

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